331份玉米自交系对丝黑穗病的抗性鉴定与评价

Identification and Evaluation of 331 Maize Germplasm Resistance to Sporisorium reilianum Causing Head Smut

2020-2021年通过田间人工接种对331份玉米自交系进行抗丝黑穗病鉴定。结果表明,4份材料冀资13W154、RA461、18-QTL-18和F2644表现高抗(HR),占鉴定总数的1.21%;5份材料55438-1、18-QTL-14、HA746、B6和T7308表现抗病(R),占鉴定总数的1.51%;冀资S225、F3814、18-HDY-25等61份材料表现中抗(MR),占鉴定总数的18.43%;B317、冀资S516、T5863等185份材料表现感病(S),占鉴定总数的55.89%;冀资H631、CNHS17013、55444-1等76份材料表现高感(HS),占鉴定总数的22.96%。中抗(MR)以上材料黑龙江省14份、内蒙古自治区50份、河北省6份,分别占其本省鉴定数量的29.79%、23.15%、8.82%,来自河北的种质整体抗丝黑穗病水平低于黑龙江和内蒙古。

From 2020 to 2021,the resistance of 331 maize inbred lines to Sporisorium reilianum was identified by artificial inoculation in the field.The results showed that Jizi 13W154,RA461,18-QTL-18,and F2644 exhibit-ed high resistance(HR),accounting for 1.21%of the total identified.Additionally,55438-1,18-QTL-14,HA746,B6,and T7308 displayed resistance(R),accounting for 1.51%of the total identified.Moreover,61 materials,includ-ing Jizi S225,F3814 and 18-HDY-25,demonstrated moderate resistance(MR),accounting for 18.43%.On the oth-er hand,185 materials,including B317,Jizi S516,and T5863,showed susceptible(S),accounting for 55.89%.Fur-thermore,Jizi H631,CNHS17013,55444-1 and other 76 materials showed high susceptibility(HS),accounting for 22.96%of the total number of identifications.The overall level of resistance of germplasm from Hebei to HS was low-er than that of Heilongjiang and Inner Mongolia,with 14 materials from Heilongjiang,50 materials from Inner Mon-golia,and 6 materials from Hebei,accounting for 29.79%,23.15%,and 8.82%of the total number of identifications in their provinces,respectively.The overall resistance level of Hebei germplasm against HS was lower than that of Heilongjiang and Inner Mongolia.